Chandler raised $175,800 from April 1 to June 30, according to reports filed this week with the Federal Election Commission. Barr, a Lexington lawyer, raised $399,642 in that time.

But Chandler ended the quarter with $1.74 million on hand. Barr remains far behind with $360,892 on hand.

Barr spent $236,964 on campaign expenses just since April 29, or 62 percent of all that he collected in donations. Barr paid more than half of that — $124,132 — to Strategic Media Services, political consultants on K Street in Washington.

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Chandler reported that more than half of his recent money came from political action committees, including $5,000 from defense contractor Honeywell International, $5,000 from the American Federation of Teachers, $5,000 from American Crystal Sugar Co., $2,500 from the American Association of Orthopedic Surgeons, $2,500 from the National Air Traffic Controllers Association, $2,000 from the Pechanga Band of Luiseno Indians of Temecula, Calif., and $1,000 from the Chickasaw Nation of Ada, Okla.

The Distilled Spirits PAC gave Chandler $220 in in-kind contributions for a fund-raising event.

Among Chandler's campaign purchases was mailing lists from an environmentalist group, the Sierra Club, in San Francisco, for which he paid $198.

Chandler has been defending his vote in favor of a "cap-and-trade" plan to reduce greenhouse gas emissions from coal and other fossil fuels. Chandler's vote was unpopular with Kentucky's coal industry and its supporters.

Barr reported that most of his recent money came from individuals, although the largest single donations came from PACs. These included $10,000 combined from coal industry groups, $5,000 from the American Society of Anesthesiologists and $5,000 each from PACs overseen by U.S. Senate Republican Leader Mitch McConnell of Kentucky, U.S. House Republican Leader John Boehner of Ohio, U.S. Rep. Pete Sessions, R-Texas, and U.S. Rep. Eric Cantor, R-Va.